Graupner Rotaryselect mc-16 Owner's manual

Programming Manual

mc-16 / mc-20 HoTT.3.en

mc-16 mc-20

2Table of contents

Function ﬁelds in the display................................ 34

Position indicator................................................. 34

Entry lockout ....................................................... 34

Warning notices................................................... 35

HIDDEN MODE ................................................... 36

Language selection

VOICE.................................................. 36

Change of display language ................. 37

Firmware update via SD card ......................... 37

STICK CALIBRATION ..................................... 38

Bluetooth initialization..................................... 39

Telemetry data display ......................................... 40

Commissioning the transmitter ........................... 48

Transmitter ﬁrmware updates............................... 50

Restoring the transmitter software....................... 51

Receiver initialization............................................ 52

Receiver ﬁrmware updates .................................. 53

Secure receiver settings....................................... 54

Installation notices................................................ 54

Receiver power supply ........................................ 56

Deﬁnitions of terms................................................... 58

Physical control, switch and control switch assignments ...... 60

Digital trim ................................................................ 62

Winged models...................................................... 64

Receiver layout.................................................... 65

Servos in wrong direction .................................... 65

Helicopter models ................................................. 66

Receiver layout.................................................... 67

Program descriptions

16 20

Loading a new memory location............................... 68

»Model select«.....................................   71

»Copy / Erase«.....................................   72

»Suppress codes«...............................   76

»Suppress models«............................   77

»Base setup model«..............................  0000

Winged model ..................................................... 78

Binding type................................................... 79

General notices

Warning and note symbols ......................................... 3

Safety notices ........................................................... 4

Safety notices and handling regulations for

Lithium-Ion (LiIo) and Lithium-Polymer (LiPo)

batteries ..................................................................... 8

Environmental protection notices .............................. 10

Foreword.................................................................. 10

Remote control set description................................. 13

Technical data .......................................................... 17

General operating notices

Transmitter .......................................................... 18

Transmitter power supply ............................... 18

Charging the transmitter battery ..................... 18

Charging with automatic chargers .................. 18

Recommended chargers (accessory) ............. 18

Removing the transmitter’s battery ................. 19

Inserting the transmitter’s battery.................... 19

Battery operation timer ........................................... 19

General charging notices.......................................... 19

Opening the transmitter housing..................... 20

Lithium battery CR 2032 ......................................... 20

Stick conversions ................................................ 21

Stick length adjustment ....................................... 22

Transmitter neckstrap support bars ................... 22

Transmitter description

Front side....................................................... 23

Face-side connectors

Charger socket ............................................. 24

DSC jack........................................................ 24

Data jack........................................................ 25

Headset connector......................................... 25

Card slot ........................................................ 26

Mini-USB connector....................................... 28

Bottom side transmitter interior............................ 29

Display and keypad ............................................. 30

Operating the “data terminal“............................... 31

Shortcuts ............................................................ 32

Concealed menu columns................................... 33

Table of contents

“Binding” transmitter and receiver................... 80

Range test...................................................... 84

Helicopter model ................................................. 88

Binding type................................................... 89

“Binding” transmitter and receiver................... 90

Range test...................................................... 94

»Model type«.......................................   098

»Helicopter type«................................   102

»Servo adjustment«............................   106

»Stick mode«......................................  0000

Winged model ........................................................ 108

Helicopter model .................................................... 110

»Control adjust«.................................  0000

Winged model ................................................... 112

Helicopter model ............................................... 116

Throttle limit function .................................... 122

Basic idle setting .......................................... 123

Throttle limit in combination with “AR” in the

»Stick mode« menu .................................... 125

»Dual Rate / Expo«.............................  0000

Winged model ................................................... 126

Helicopter model ............................................... 130

»Channel 1 curve«..............................  0000

Winged model ................................................... 134

Helicopter model ............................................... 137

»Switch display«.................................   140

»Control switches«.............................   141

»logical switches«...............................   144

Howis a ﬂight phase programmed? ....................... 146

»Phase settings«................................  0000

Winged model ................................................... 148

Helicopter model ............................................... 152

»Phase assignment«...........................   154

»Phase trim« (Winged model)...............   156

»Non-delayed channels«....................   157

»Timers (general)«..............................   158

»Flight phase timers«.........................   162

What is a mixer?..................................................... 165

»Wing mixers«.....................................   166

Model type: “1AIL”............................................. 169

Table of contents

Model type: “1AIL 1FL”..................................... 170

Model type: “2AIL”............................................. 172

Model type: “2/4AIL 1/2/4FL” ........................... 174

(Max. 2 ailerons and 2 ﬂaps with the

standard 8-channel mc-16 transmitter)

»Helicopter mixer«..............................   184

Fine-tuning the throttle and collective

pitch curve ........................................................ 195

Autorotation setting ........................................... 198

General notes on freely programmable mixers ........ 200

»Free mixers«......................................   201

Linear mixers..................................................... 205

Curve mixers ..................................................... 207

Examples .......................................................... 209

»Mix active / phase«............................   211

»Mix-only channel«.............................   212

»Dual mixer«........................................   214

»Swashplate mixer«............................   216

»Fail safe«............................................   216

»Teacher/Pupil«...................................   218

Connection schematic....................................... 221

Wireless HoTT system....................................... 222

»Tx. output swap«...............................   226

»Pro trim«  

Winged model ................................................... 228

Helicopter model ............................................... 230

»Trim memory«  

Winged model ................................................... 232

Helicopter model ............................................... 234

»Telemetry«.........................................   236

Important notices: ............................................. 236

SETTINGS & DATAVIEW.................................... 238

Satellite mode .............................................. 247

Sensor(s)...................................................... 248

Sensor (select)................................................... 250

RF STATUS VIEW.............................................. 251

VOICE TRIGGER ............................................... 252

»Channel Sequencer«.........................   254

»Multichannel«....................................   257

»Ring limiter«.......................................   260

WARNING:

This symbol highlights the adjacent or following

instructions, which absolutely must be adhered

to by the user! Any disregard of these instruc-

tions, can affect the safe operation and safety

of the operator as well as bystanders.

ATTENTION:

This symbol highlights the adjacent or following

instructions which must be observed by the

user! Any disregard of these instructions can

lead to damage of any kind, loss of guarantee

and so on.

This symbol without speciﬁc headline empha-

sizes the adjacent or following notes and tips

which should be strictly observed by the user!

Any disregard of these instructions and tips

can result in damage of any kind.

This symbol highlights hints and tips of all

kinds, which should be observed by the user.

This symbol highlights information about clean-

ing the device, which should be strictly ob-

served by the operator in order to ensure a

long life of the device.

»MP3 player«.......................................   264

»Basic settings, transmitter«.............   266

»Servo display«...................................   274

»Servo test«.........................................   275

»Code lock«.........................................   276

»Info Display«......................................   278

Programming examples

Introduction. ........................................................... 280

Winged model

First steps ......................................................... 282

Incorporating an electric drive............................ 289

C1 joystick switchover between:

Electric motor and butterﬂy........................... 292

Electric motor and airbrake........................... 295

Timer conﬁrmation with control or switch........... 296

Parallel operating servos.................................... 298

Using ﬂight phases

Example 1.................................................... 300

Example 2.................................................... 304

Control of temporal processes........................... 310

Delta and ﬂying wing.......................................... 312

F3A model......................................................... 316

Helicopter models .................................................. 320

Appendix

FCC Information ..................................................... 332

Declaration of Conformity ....................................... 333

Warranty Certiﬁcate ................................................ 334

Warning and note symbols

and their meaning

4Safety notices

In order to enjoy your modelling hobby for a long time,

please read these instructions thoroughly and give

particular attention to the safety notices.

If you are a beginner with remote controlled model

aircraft, ships or cars, you should really ask an experi-

enced model pilot for assistance.

INTENDED USE

ATTENTION:

This remote control system may only be

used for the purpose intended by the

manufacturer, i.e. for the operation of

unmanned remote controlled models. Any other

usage is not permissible and can cause damages

to the remote control system, to other things and/

or to the people. For damages derived from other

use we offer no warranty and take no liability.

ATTENTION:

NOT SUITABLE FOR KIDS UNDER 14 YEARS

OLD, SAFETY IS NO ACCIDENT and REMOTE

CONTROLLED MODELS ARE NOT TOYS

… because even small models can cause substantial

property damage and/or personal injuries if they are not

handled properly - even if caused by third parties.

This manual is an important part of the set, it

contains important information for a proper and

safe use and maintenance. If this remote con-

trol system changes ownership, these instructions

should surely be included with remote control system.

Failure to comply with the operating instruc-

tions and the safety instructions will void the

warranty.

Other notes and warnings

Technical defects of an electrical or mechanical nature

can lead to unexpected startup of a motor and/or parts

being hurled through the air to pose a danger of injury

to you and to others.

Short circuit conditions are to be avoided absolutely! A

short circuit condition may not only destroy parts of the

remote control system but, depending on the circum-

stances and the battery energy involved, may also

pose acute danger of incineration or even explosion.

All motor-driven parts, such as aircraft or ship propel-

lers, helicopter rotors, open gearboxes etc. represent

a constant danger. Contact with these parts must be

avoided. A rapidly turning aircraft propeller can, for

example, sever a ﬁnger. Also pay attention that other

objects do not come into contact with driven parts.

When a drive battery is connected or a motor is run-

ning: never get into the danger zone of driving mecha-

nisms.

Be sure to pay attention that motors do not start up

unintentionally while performing programming opera-

tions. Disconnect the fuel supply or battery terminals to

motors before programming.

Protect all units from dust, dirt, moisture and other

foreign parts. Never expose these units to vibrations

or excessive hot or cold temperatures. Remote con-

trol operation may only be performed under “normal”

outdoor temperatures, i.e. within a range of -10°C to

+55°C.

Avoid mechanical jarring and pressure stresses. Always

check units for damage to housings and cables. Do

not use units which have been damaged or become

wet, even after they are dry again.

Only those components and accessories which we

recommend may be used. Always use original Graup-

ner plug and jack connectors which are made for one

another out of the same materials.

When routing cables, pay attention that they are not

stressed, unduly kinked or broken. The sharp edges

of adjacent parts also represent a hazard for insulated

conductors.

Be sure that all plug and jack connections are ﬁrmly

seated. Do not pull on the cable to disconnect a

plugged connector.

No modiﬁcations whatsoever may be made to units.

Modiﬁcations will void the operating permit and all

insurance protection. If necessary, send the device

concerned to your local Graupner Service Centre; see

page <?>.

Installing the receiver

The receiver is to be installed with a cushion of

foam rubber to afford protection against jarring;

in aircraft models behind a strong rib, for a car

or ship model the location must be protected against

dust and spraywater. However, do not enclose your

receiver completely, otherwise it may overheat in use.

The receiver may not be mounted in direct contact with

the hull or chassis as this would allow motor vibrations

and/or roadway jarring to be transferred directly to the

receiver. When a receiver system is installed in a model

with a combustion motor, all receiver parts should

always be protected against the intrusion of exhaust

gases and oil residue. Above all, this applies to the

model’s ON/OFF switch, which is typically built into the

model’s outer surface.

Position the receiver such that connecting cables to

the servos and the power supply are routed with a bit

of slack and that the receiver’s antennas are at least

5cm away from any large metal parts or wiring except

for other receiver wires/cables. In addition to steel, this

also includes carbon ﬁber parts, servos, electric mo-

tors, fuel pumps and all sorts of cables, etc.

Optimally the receiver should be placed at a readily ac-

Safety notices

Be sure to pay attention!

Safety notices

rudder actuation, vibration, rotating parts, etc., rub

against one another. Metal-to-metal contact causes

electrical “noise” which can interfere with the correct

operation of the receiver.

Transmitter antenna orientation

Transmission ﬁeld strength is minimal in an imaginary

line extending straight out from the end of the transmit-

ter’s antenna. This means that “pointing” the mc-16

HoTT and mc-20 HoTT transmitter’s antenna direct-

ly toward the model will not produce good reception

but rather degrade reception.

When multiple remote controls are operating simulta-

neously, pilots should position themselves in a loose

group. Pilots standing off to themselves not only en-

danger their own models but those of others as well.

However, when 2 or more pilots using 2.4GHz remote

control systems are closer than 5m to one another this

can lead to return channel overdrive which, in turn, will

trigger a range warning much too early. Increase your

distance between one another until the range warning

ceases.

Pre-start checks

Before switching the receiver on, be sure the throttle

control is at its Stop/Idle position.

Always switch the transmitter on rst

and then the receiver.

Always switch the receiver off rst

and then the transmitter.

If this sequence is not maintained, such that the receiv-

er is still switched on when the corresponding transmit-

ter is switched to “OFF”, then the receiver may respond

to other transmitters or general radio frequency noise.

This can cause the model to execute uncontrolled

operations that may cause personal injuries and/or

property damage.

In particular, for models equipped with a mechanical

gyro:

before switching off the receiver, disconnect the mod-

el’s power supply to prevent the motor from revving up

unintentionally.

The residual spin of a gyro often produces so

much voltage that the receiver may falsely in-

terpret a throttle signal! This will then cause the

motor to start up unexpectedly.

WARNING:

If this order is not respected, that the receiver

is turned on, but the corresponding transmitter

is “OFF”, the receiver could respond by other

transmitters and any interference.

The model can be run as a result uncontrolled steering

movements, thus possibly causing property damage

and / or personal injury.

In particular with a mechanical gyro for models:

Before you switch your receiver off, make sure by inter-

rupting the power supply, that the motor can not run

up unintentionally.

An expiring gyro can generate such a voltage that

the receiver picks up as an apparently valid throt-

tle command. Then, the motor may start uninten-

tionally!

Range test and function test

Perform checks for proper operation and range

before every session. Secure the model ad-

equately in place and ensure that no one is in

front of the model.

Perform a complete functional test on the ground and

execute a complete simulated ﬂight to exclude the pos-

sibility of system faults or problems with the model’s

programming. When doing this, be sure to follow the

notices provided on pages 84 and 94.

Never operate the transmitter in Model mode, i.e. for

ﬂying or driving, without an antenna. Be sure the an-

tenna is ﬁrmly seated in its socket.

cessible location that is well away from all other equip-

ment. Under no circumstances may a servo cable be

wrapped around the antenna or routed close to it.

Make sure that cables near the antenna cannot move

about during ﬂight.

Routing the receiver’s antennas

The receiver and its antennas must be positioned as far

away as possible from drives of any kind. If the model’s

hull is made of carbon ﬁber material, the ends of the

antennas must extend outside of the hull.

If your model features a carbon ﬁbre fuselage, the aerial

tips must always extend outside the fuselage for a

length of at least 35mm. If this is not possible, it is es-

sential to substitute longer aerials for the standard ones

(approx. 145mm long) ﬁtted to HoTT receiver(s).

The orientation of the aerial(s) is not critical, but it is

advantageous to install one receiver aerial in a verti-

cal–upright – position in the model. If your receiver is a

Diversity type–two aerials – the active tip of the second

aerial should be positioned at 90° to the tip of the ﬁrst

aerial, and ideally the distance between the two tips

should be greater than 125mm.

Servo installation

Always mount servos with the provided rubber vibra-

tion-damper parts, see “installation notes” on page

54. Only in this manner can these parts be protected

against excessively hard vibrations.

Installing control rods

Control rods must be installed such that they operate

freely and smoothly. It is particularly important that all

rudder levers are able to move to their full limits, i.e.not

otherwise mechanically blocked.

In order to be able to stop a running motor at any time,

control rods must be adjusted such that the carburet-

tor tap is completely closed when the joystick and trim

lever are brought into their end idle position.

Pay attention that no metal parts, e.g. as a result of

6Safety notices

WARNING:

If the range and functional test, and ight

simulation are not carried out in detail and

conscientiously, this may have undetect-

ed malfunction and / or reception failures result in

eg loss of control or even a crash of the model

and can lead to signicant things and / or person-

al injury as a result.

Operating a winged aircraft, helicopter, ship or

car

WARNING:

•

Never y over spectators or other

pilots. Never endanger humans or

animals. Never y in the vicinity of

high-voltage wires. Do not operate the model

in the vicinity of sluice locks or where real

boats or ships are operating. Do not operate a

model on public streets or highways, paths or

plazas, etc.

• Never switch the transmitter off whilst operat-

ing a model! If this should happen acciden-

tally, keep your nerve and wait until the trans-

mitter screen is entirely blank, i. e. until the

transmitter has shut down completely; this

takes at least three seconds. Do not switch

your transmitter on again until this has oc-

curred. If you neglect this, there is a risk that

the transmitter will “hang” immediately after

being switched on, and you will lose control

of the model. In this case your only recourse

is to switch the transmitter off again, allow it

to shut down completely, and then switch on

once more after the correct interval.

Aero-towing

WARNING:

When operating a powered tug, ensure

that the receiving systems in the two

models are always at least 50 cm apart. We

recommend the use of satellite receivers in such

situations. If you neglect this, there is a chance of

interference from the downlink channel.

Monitoring transmitter and receiver batteries

You must stop running the model to recharge

the transmitter’s battery no later than when low

transmitter battery voltage triggers the “Batt

must be recharged!!” display and acoustic signal.

Check the charge in batteries routinely, particularly the

receiver’s battery. Do not wait until the movements of

controlled mechanisms are noticeably slower. Replace

expended batteries before they cause problems.

The battery manufacturer’s charging instructions are

always to be followed, this includes mandatory adher-

ence to the length of charging time. Never leave batter-

ies being charged unattended.

Never attempt to charge primary batteries (non-re-

chargeable batteries) because they can explode.

All secondary batteries (rechargeable batteries) must

be charged before every session. To avoid short circuit

conditions, ﬁrst connect the charger cable’s banana

plugs, polarity correct, into the charger and thereafter

connect the charger cable’s plugs to the transmitter

and receiver batteries.

Disconnect all power sources from the model when it is

not to be used for an extended period of time.

Never attempt to use defective batteries, damaged

batteries or mixed-type battery combinations as a sin-

gle group. Do not use mixed combinations of old and

new batteries or batteries of different manufacture.

Capacity and operating time

The rule: “capacity is reduced with every successive

recharging”, applies to all batteries. Internal resistance

increases at low temperatures to further reduce capac-

ity. As a consequence, the battery’s ability to provide

current and hold its voltage is reduced.

Frequent charging or the use of battery maintenance

programs can also result in gradual loss of battery

capacity. Therefore the capacity of batteries should be

checked at regular intervals, not in excess of every six

months, and replaced if performance is found to be

signiﬁcantly deﬁcient.

Purchase only genuine Graupner batteries!

Interference suppression for electric motors

All conventional electric motors produce

sparks between their collector and brushes.

Depending on the type of motor involved, this

may cause more or less interference with the function-

ality of the remote control system.

The electric motors of a properly built system should

therefore have interference suppression features. For

electric drive models it is particularly important that

every one of its motors is provided with proper inter-

ference suppression. Interference ﬁlters extensively

suppress such disturbances and should always be

included.

Follow the respective recommendations included in the

motor’s operating and installation notices.

For further details about interference ﬁlters, refer to the

Graupner RC main catalog or in Internet at

www.graupner.de.

Servo interference lters for extension cables

No. 1040

The servo interference ﬁlter is necessary when an

extended-length servo cable is used. This ﬁlter is at-

tached directly to the receiver output. In critical cases a

second ﬁlter can be attached to the servo.

Safety notices

Using electronic speed controllers

Choosing the right electronic controller is largely a mat-

ter of matching controller performance to the motor to

be controlled.

In order to prevent an overload or damage to the

speed controller, its current rating should be at least

half of the maximum locked-rotor current draw of the

motor to which it is connected.

Particular attention is appropriate for so-called “tuning

motors”. Because of their low-turns coils these motors

can draw a multiple of their rated current in a locked-

rotor condition and this can lead to the destruction of

the speed controller.

Electric ignition systems

Combustion motor ignition systems also produce in-

terference that can negatively inﬂuence remote control

functionality.

Always supply power to an electric ignition system from

a separate, dedicated battery.

Use only interference-suppressed spark plugs, spark

caps and shielded ignition leads.

Mount the receiver sufﬁciently far away from ignition

system components.

Static charges

WARNING:

A remote control system will be destroyed

by the magnetic shock waves produced

by a lightning strike –even if the storm is

miles away. Therefore, stop ying right away if a

storm is approaching. Static charging via the

antenna also represents a lethal hazard.

Attention

• In order to fulﬁll FCC HF emission require-

ments for mobile transmitters, a distance of

at least 20cm must be maintained between

this system’s antenna and other persons when this

system is operating. Operation of this system at a

lesser distance is therefore not recommended.

• To avoid disturbance caused by the electrical char-

acteristics and emissions of other transmitters, keep

at least a 20cm distance from other transmitters.

• Operation of the remote control system requires a

correct program setting for the given country in the

transmitter unit. This is necessary for compliance

with diverse regulations like FCC, ETSI, CE etc. Fol-

low the respective instructions provided for this with

the transmitter and receiver.

• Prior to every ﬂight, perform a complete functional

test, range test and execute a complete simulated

ﬂight in order to exclude the possibility of system

faults or problems with the model’s programming.

• Never program the transmitter or receiver while the

model is being operated.

Care and maintenance

Never clean the housing, antenna, etc. with

cleaning agents, gasoline, water or similar

means. Use only a dry, soft cloth.

Components and accessories

WARNING:

As manufacturer of this equipment Graup-

nerGmbH& Co. KG recommends only com-

ponents and accessories which have been

tested and approved by Graupner for their suitability,

functionality and safety. If this recommendation is

followed, Graupner accepts responsibility for the prod-

uct.

Graupner cannot accept any responsibility for

the parts or accessories of other manufacturers

which have not been approved and Graupner

cannot evaluate every individual product made by

other companies to assess if they are safe to use.

Liability exclusion / damage compensation

This manual serves only as a source of information and

can be changed without prior notiﬁcation. Graupner

accepts no responsibility or liability for errors or inaccu-

racies which may be contained in this manual.

Graupner cannot monitor compliance with the assem-

bly instructions, the operating instructions or the condi-

tions and methods under which remote control com-

ponents are installed, operated, utilized or maintained.

Therefore Graupner accepts no form of liability for loss,

damage or costs consequential to incorrect usage or

operation or which can be attributed to same.

Unless otherwise prescribed by law, the obligation of

Graupner to provide damage compensation, regard-

less of legal grounds, is limited to the invoice value of

the quantity of Graupner goods contributing directly

to the damage-inducing event. This does not apply if

Graupner is found to be subject to unlimited liability

pursuant to binding legal stipulations with respect to

intent or gross negligence.

Furthermore we will only consider claims if a log ﬁle is

present; see page 26 under “Data recording” so as

page 159 under “Flight time”. For the same reason

the transmitter must always be updated to the latest

software status.

It is essential that you register at https://www.graup-

ner.de/en/service/product_registration.aspx to ensure

that you are constantly informed of important software

updates. This is the only means by which we can auto-

matically keep you aware of new updates by e-mail.

8Safety notices

Safety notices and handling regulations for Lithium-Ion

(LiIo) and Lithium-Polymer (LiPo) batteries

As applicable for all highly technical products, obser-

vance of the following safety notices and handling

instructions is essential for a long service life, fault-free

operation, and harmless utilization of lithium/polymer

batteries.

These instructions are to be safeguarded. If the unit is

transferred to another user, these instructions should

certainly be passed along to the new user.

LiIo-/LiPo batteries require particularly attentive han-

dling. This applies to charging, discharging as well as

for storage and other handling. Adherence to the fol-

lowing special speciﬁcations is necessary:

Special notices for charging LiIo-/LiPo batteries

from Graupner

WARNING:

• Since Graupner GmbH cannot supervise

the correct charging and discharging of

cells, the entire guarantee is void in cases

of improper charging or discharging.

• Only approved chargers with appropriate charging

cables may be used for charging LiIo-/LiPo bat-

teries. Any manipulation to the charger or charger

cables can lead to severe damage.

• The maximum charging capacity must be limited to

1.05 times the battery’s capacity.

Example: 700mAh battery = 735mAh max. charg-

ing capacity

• Use only the outlet-charger included with the set

or a specially designed charger/discharger from

Graupner to charge and discharge LiIo-/LiPo bat-

teries, refer to page 18 or www.graupner.de.

• Ensure the settings for the number of cells or for

ﬁnal charging voltage and ﬁnal discharge voltage are

correct. Be sure to observe the operating instruc-

tions for your charger/discharger.

• Under these conditions Graupner LiIo-/LiPo bat-

teries can be charged with a maximum of 2C (the

value 1C corresponds to the cell capacity) charging

current. At a voltage of maximum 4.2V per cell and

above, charging must continue a constant voltage

of 4.2V per cell until charging current drops below

0.1 … 0.2A.

• The permissible temperature range for charging and

storing LiIo-/LiPo batteries is 0 … +50°C.

• Never leave batteries being charged unattended.

• The battery to be charged must be placed on a

non-combustible, heat resistant, non-conducting

surface during the charging process. Combustible

or readily ignited objects are to be kept away from

the charging conﬁguration. Batteries may only be

charged under supervision.

• Avoid short circuit. Never pierce a LiIo/LiPo battery,

by doing it you may cause a short circuit and a ﬁre,

explosion and other problems.

• Charging voltage over 4.20V per cell must be

avoided absolutely as the cell would otherwise be

permanently damage and could cause a ﬁre. In or-

der to prevent the over-charging of individual cells in

a pack, a cut-off voltage between 4.1 … 4.15V per

cell should be set to increase service life.

• Incorrect handling can lead to explosions, ﬁre,

smoke and poisoning hazards. Furthermore, dis-

regard for instructions and warnings can lead to

performance losses and other defects.

• Before every use check the state of your batteries.

Damaged or ruined batteries or cells should not be

used.

• LiIo/LiPo batteries contain electrolytes and elec-

trolyte vapours which are unhealthy. Never enter in

touch directly with electrolytes. In case of contact

with eyes, skin or other parts of the body, wash

soon with a lot of water and call soon a doctor.

• The battery’s capacity is reduced by every charge/

discharge cycle. Storing the battery at temperatures

which are too high or too low can also lead to a

gradual reduction in capacity. In model operation,

battery capacity drops to about 50 … 80% of new

battery capacity after about 50charge/discharge

cycles–even though all charge/discharge rules are

followed. This is due in part to the high discharge

currents and inductive currents caused by motors.

• Never attempt to charge battery cells with the

wrong polarity. Abnormal chemical reactions

take place when batteries are charged with re-

versed polarity and the battery will be useless.

This can cause breaks, smoke and ames.

• Battery packs may only be connected in series or

parallel in exceptional cases as cell capacities and

charged state can differ too greatly. This is why the

battery packs we deliver are selected.

• LiIo-/LiPo batteries connected in series within

a pack may only be charged as a group if the

voltage of individual cells do not differ by

more than 0.05 V. The LiIo battery included

with the set is equipped with a special safety

circuit such that “compensation” for voltage

differences between individual cells, by way of

an otherwise typical balancer plug connection,

is not necessary.

• Individual battery cells and batteries are not toys

and must therefore not get into the hands of chil-

dren. Batteries/cells must be kept out of the reach

of children.

Safety notices

• Batteries must not get into the vicinity of babies or

small children. If a battery is swallowed, immediately

go to a doctor or emergency medical facility.

• Batteries must not be put in a microwave oven or

put under pressure. Smoke, ﬁre and more can be

the consequences.

• Never dismantle a LiIo-/LiPo battery. Dismantling

a battery can cause internal short-circuits. Gas, ﬁre,

explosions and other problems can result.

• The electrolyte and electrolytic vapors in LiIo-/LiPo

batteries are harmful. Absolutely avoid all direct

contact with electrolytes. If electrolytes come into

contact with skin, eyes or other body parts, immedi-

ately wash out or rinse out with generous amounts

of fresh water then be sure to consult adoctor.

• Batteries built into equipment must always be

removed from that equipment when it is not cur-

rently in use. Always switch off equipment after it is

used to prevent deep discharging. Always charge

batteries before it is too late. Store batteries on a

non-combustible, heat resistant, non-conducting

surface! Deep-discharged LiIo-/LiPo batteries are

defective and may no longer be used!

Storage

LiIo-/LiPo cells should have a 10 … 20%

charge capacity when stored. If cell voltage

drops below 3V, then LiIo-/LiPo cells must

absolutely be recharged to a capacity of 10 … 20% of

full capacity. Otherwise, further deep-discharging of the

battery will make it useless during storage in a dis-

charged state.

Special notices for discharging LiIo-/LiPo batter-

ies from Graupner

• A continuous current rate of about 1C does

not represent a major problem for Graup-

ner LiIo-/LiPo batteries. For larger currents,

please follow the catalog speciﬁcations. In any case,

observe the maximum current rating for the con-

nector system, see maximum discharge current on

the battery.

• Discharging below 2.5V per cell damages cells per-

manently and is therefore to be avoided absolutely.

Short circuit conditions are to be avoided absolute-

ly. Permanent short circuits lead to destruction of

the battery, high temperatures and perhaps even

self-ignition may follow.

• During discharge, battery temperature must not

rise, in any case, to over +70°C. Otherwise, bet-

ter cooling or a lower rate of discharge must be

introduced. The temperature can easily be checked

with the infrared thermometer, No. 1963. The bat-

tery must never be discharged via the transmitter’s

charging socket. This socket is not suitable for this

purpose.

Other handling notices

• Never short-circuit the battery. A short-

circuit allows very high current to ﬂow and

this heats up the cells. This will lead to loss

of electrolyte, the production of gases and perhaps

even explosions. In the vicinity of, or while handling,

Graupner LiIo-/LiPo batteries, avoid electrically con-

ducting surfaces because of the danger of creating

a short-circuit condition.

• Battery packs may only be connected in series or

parallel in exceptional cases as cell capacities and

charged state can differ too greatly. This is why the

battery packs we deliver are selected.

Handling connectors

• These connectors are not as robust as for

other batteries. This applies particularly to

the plus pole connector. The connections

can easily be broken off. Due to thermal transfer,

the connector tabs may not be soldered directly.

• The connections of LiLo / LiPo batteries are not as

robust as those of other batteries. This applies in

particular to the positive pole connection. The con-

nections can easily break off.

Cell connection

Direct soldering on battery cells is not permit-

ted.

The heat of direct soldering can damage bat-

tery components, such as separator or isolator.

Battery connections should only be made by industrial

spot welding. A professional repair made by the manu-

facturer or distributor is necessary to replace missing or

torn-off cables.

Replacing individual battery cells

The replacement of battery cells may only be

made by the manufacturer or distributor and

never by the user himself.

Damaged cell usage

Damaged cells may never be used or returned

to service.

Characteristics of damaged cells include: dam-

aged housing packing, deformed battery cells, electro-

lyte or leaking electrolyte. In these cases, further use of

the battery is not permissible.

Damaged or useless cells are hazardous waste items

and must be appropriately disposed.

General warning notices

Batteries must never be put in ﬁre or burned.

Battery cells must not be submerged in liq-

uids, such as water, seawater or beverages.

Any contact with liquids, of whatever nature, is to be

avoided.

10 Safety notices

Notes for environmental protection

Notice for remote control set mc-16 HoTT and

mc-20 HoTT

No. 33016 /33020

These radio control sets are ﬁtted as standard

with a LiIo transmitter battery with integral

protective circuit (changes reserved). Once the

factory preset voltage limit of 3.60V has been reached,

a warning will appear in the display.

Disposal of used batteries

Some countries have laws requiring that all

used batteries be turned over to an authorized

collection centre.

Disposing of batteries along with common household

garbage is forbidden. Old batteries can be turned into

communal collection centres for disposal at no charge

or they can be returned to one of our dealerships or

anywhere else where batteries of that given type are

sold. Used batteries we have delivered can also be

sent back to us, at your cost, through the mail. Use the

return address below:

Graupner GmbH

Service: Used batteries

Henriettenstr. 94-96

D-73230 Kirchheim unter Teck

This represents an essential contribution to environ-

mental protection.

Caution:

Damaged batteries require among other

things, special packaging, because they

are very toxic!

Environmental protection notices

The symbol on this product, its operating

instructions or packaging gives notice that this

product may not be discarded as common

household waste at the end of its service life. It must

be turned over to a recycling collection point for electric

and electronic apparatus.

The materials can be recycled according to their mark-

ings. You make an important contribution to protec-

tion of the environment by utilizing facilities for reuse,

material recycling or other means of exploiting obsolete

equipment.

Batteries must be removed from the unit

and disposed of separately at an appro-

priate collection point.

Please inquire with local authorities

about the responsible waste collection

locations.

This manual serves only as a source of infor-

mation and can be changed without prior

notiﬁcation. Graupner accepts no responsibility

or liability for errors or inaccuracies which may be

contained in the information section of this manual.

For your notes

12 Foreword

mc-16 and mc-20

The Newest Generation of Remote Control Technology

The technical advances across the entire spectrum of

model building is an ever-present challenge to design

engineers. This is why the introduction of new trans-

mission technology in the 2.4GHz band represents a

new milestone.

The HoTT-System (Hopping Telemetry Transmission)

developed by Graupner is a synthesis of know-how,

engineering and testing done around the world by

professional pilots.

Established Graupner HoTT techniques theoretically

permit over 200 models to be operated at the same

time. However, because of the interspersed radio-

frequency utilization permitted by certiﬁcation for the

2.4GHz ISM band, this number is signiﬁcantly lower

in practical application. Nevertheless, in general more

models can be operated simultaneously in the 2.4GHz

band than would be the case in conventional 35 or 40

MHz frequency bands. The real limiting factor is–as

often before– is still likely to be the size of available op-

erating space (i.e. airspace for aircraft). Alone the fact

that it is no longer necessary to coordinate transmit-

ting frequencies with other pilots in the vicinity (which

is sometimes quite difﬁcult in broken landscapes, such

as on hillside slopes) represents an enormous boost for

remote control operating security.

Bidirectional communication between transmitter

and receiver, by way of a return channel built into

the receiver, permits convenient access to data and

programming in the HoTT receiver. For example, this

makes it possible to swap receiver outputs or to divide

up control functions among multiple servos (channel

mapping). Servo travel and servo rotation directions in

the receiver can also be matched to one another with

these facilities. Telemetry data, like VARIO and GPS

data, can be called up from optionally available mod-

ules.

The mc-16 HoTT and mc-2 0 HoTT radio control

sets are based on the Graupner/JR mc-24 computer

radio control system, which was introduced back in

1997. The new equipment has been specially devel-

oped for the advanced RC pilot. The transmitters of

this series offer an unprecedented level of security and

reliability combined with outstanding operating con-

venience and ease of use.

Both these HoTT systems can easily be used to oper-

ate all current model types, whether your preference is

for ﬁxed-wing model aircraft or helicopters, model cars

or boats.

For example, every mc-16 HoTT and mc-2 0 HoTT

transmitter is fully equipped in terms of software and

hardware to allow the use of the renowned NAUTIC

modules. A further innovation is the “channel se-

quencer”–available only on the mc-20 HoTT – which

provides a means of automating servo sequences

involving up to three servos.

However, it is ﬁxed-wing model aircraft and helicopters

in particular which call for complex mixed functions

involving the control surfaces or swashplate control

system. In this respect the latest computer technology

makes it extremely simple to program the system to

cope with a vast range of model requirements: simply

select the appropriate model type in the program of

your HoTT transmitter, and the software automatically

sets up all the relevant mixing and coupling functions.

Separate modules for implementing complex coupling

functions are no longer required, and complicated

mechanical mixers in the model are completely super-

ﬂuous.

Additional ﬂight-phase-speciﬁc settings can be stored

in every model memory location. For example, such

settings can be made for various parameters that can

be called up to implement particular ﬂight maneuvers at

the “press of a button”. Additional model memories can

be stored on the SD card, which is included standard

with the set. Even telemetry data can be recorded for

subsequent evaluation on a PC.

Since the mc-20 HoTT is equipped with two dis-

plays, the lower display has been optimized for com-

prehensible, simple operation of the software. The

graphic representation of mixer functions is particularly

helpful. The upper display allows telemetry data to be

called up from the receiver.

Functionally-related options are clearly arranged by

content in a simple organization. The clear, compre-

hensible program structure permits a beginner to

quickly become familiar with the various functions and

able to use all options pertinent to his level of expertise

with remote control models.

This handbook describes every menu in detail. There

are tips, many notices and programming examples to

supplement the descriptions and also explanations for

model speciﬁc technical terms, like transmitter control,

dual rate, butterﬂy, and so on.

Please observe the safety notices and technical no-

tices. Read through the instructions attentively. Before

usage, test all functions by simply attaching servos to

the receiver included in the set. While doing this, ob-

serve respective notes on page 77. This will help you

learn the essential operating techniques and functions

of your HoTT transmitter.

Always handle your remote controlled model with a

sense of responsibility so that you do not endanger

yourself or others.

The Graupner team wishes you much pleasure and

success with your HoTT transmitter system, the new-

est generation of remote control systems.

Kirchheim-Teck, june 2015

Remote control set description

mc-16 and mc-20 series computer systems

two remote control sets with 2,4-GHz-Graupner-HoTT technology

(Hopping Telemetry Transmission)

Technology that enthralls.

The superior functional security of Graupner

HoTT technology accomplished with bidirectional

communications between transmitter and receiv-

er with integrated telemetry, freely programmable

voice output via headset connector, and ultra-fast

response times.

Simpli ed programming using capacitive touch-

buttons on the mc-20 HoTT and four-way push-

buttons on the mc-16 HoTT.

High-contrast eight-line graphic screen provides

a clear display of all set-up parameters. Switch-

able blue backlighting. The mc-20 HoTT fea-

tures an independent second screen for display-

ing telemetry data. Storage of telemetry data on a

micro SD memory card.

USB connection to read and write the model’s

memories as well as for making  rmware up-

dates.

• Integrated Graupner HoTT 2.4 GHz transmission

system

• The high-speed primary processor is used for data

transfer, ensuring ultra-fast response times. No

additional delays through detours via a module

processor.

• Maximum interference immunity made possible by

optimized frequency hopping through as many as

75 channels and wider channel spread

• Intelligent data transfer with correction function

• Over 200 systems can be used simultaneously

• The HoTT technique of bidirectional communication

between sender and receiver, as well as the fastest

possible transmission rate (10ms) assures extreme-

ly short reaction times.

• Modulation can be switched by software: when

necessary, you can switch from “HoTT” to “EXT.” or

“SP.” by pressing a button.

• Case incorporates integral patch aerial

• Transmitter features integral slot for SD and SDHC

memory cards, formatted to FAT or FAT32, for

saving log ﬁles, model programming data and sup-

plementary functions such as transmitter ﬁrmware

updates.

• Transmitter features alternative method of battery

charging via the USB socket.

• 6 different languages (Dutch, English, French, Ger-

man, Italian and Spanish) available per software

update.

• Simpliﬁed arrangement of operating elements, such

as joysticks, external switches, proportional controls

and trim levers as control functions

• CONVENIENCE MODE SELECTOR to simplify

changeovers between operating modes 1 … 4 (e.g.

throttle left/throttle right)

• Extremely wide receiver operating voltage range of

3.6V to 8.4V (functional to 2.5 V)

The illustration shows the contents of the mc-20 HoTT transmitter set.

Remote control set description

14 Remote control set description

• Fail-safe, free channel assignment (channel map-

ping), mixer functions and all servo settings are

simple to program

• Swashplate limiting: This function limits the swash-

plate’s tilt angle to prevent the potential for mechan-

ical collision in helicopter 3D operation at full-limit

roll and pitch-axis

• Multi-channel function for operating Graupner prod-

uct line NAUTIC modules

• Digital trimming, effective per speciﬁc ﬂight-phase

• C1 changeover, brake/elec. motor: This changeover

can be implemented very easily via enhanced ﬂight

phase programming. The pilot determines the joy-

stick positions (forward/rear) at which the motor is

to switched off or the airbrakes are to be retracted.

• Twelve freely programmable mixers for ﬁxed-wing or

helicopter models, each with freely selectable input

and output functions; four curve mixers with innova-

tive 6-point curve technology for easy to set and

adjust curve values at up to eight points for throt-

tle, pitch, tail or other nonlinear characteristics. The

arithmetic unit in the CPU employs an ingenious

method of calculating polynomial approximations for

truly-rounded, ideal MPC (multi-point curve) mixer

curves.

• Curve mixer points can be offset in both axes using

the four-way buttons.

• Up to seven ﬂight-phase programs can be indivi-

dually adapted for each model and given a name.

The switchover time is programmable separately.

• SUPER SERVO menu with a perfect overview of all

servo setting data and simple parameter correc-

tion at four “levels”: direction of rotation, mid-point

setting, separate servo travel on both sides and

separate travel limiting on both sides for 8 (mc-16

HoTT) respectively 12 servos (mc-20 HoTT) with

a total of 48 respectively 72 setting options.

• DUAL-RATE, EXPO menu with 36 potential setting

variants for three servo functions and up to seven

ﬂight phases

• Servo display hot-key: from virtually any menu,

pressing the and buttons of the left-hand four-

way button takes you directly to the servo display

• Highly practical multi-function menus for ﬁxed-wing

model aircraft and helicopters. Entering the number

of aileron and ﬂap servos, or collective pitch servos,

automatically sets up all the relevant mixer functions

in the appropriate multi-function menu.

• Helicopter swashplate mixer for 1, 2, 3, or 4 point

steering.

• Future-proof design: updatable, high-speed 32-bit

operating system with modern ﬂash memory, simple

update capability via the USB port and the micro-

SD card.

• Transmitters feature sockets for PC USB interface,

earphone, SMART-BOX, DSC system as standard;

they are prepared for Trainer mode operations

• ESC button switches the screen from the Main

menu to the »Telemetry« menu and back.

• Comprehensive telemetry displays, programming

and analysis functions directly on the transmitter

screen

• Wired and wireless Trainer systems with total trans-

fer; all settings are entered at the Teacher transmit-

ter.

•

Fail-safe, free channel assignment (channel map-

•

SUPER SERVO menu with a perfect overview of all

mc-16 and mc-20 series computer systems

two remote control sets with 2,4-GHz-Graupner-HoTT technology

(Hopping Telemetry Transmission)

mc-16 HoTT

• 20 model memories with storage of all model-spe-

ciﬁc programming and set-up parameters

• Eight control functions as standard, can be expand-

ed to twelve at extra cost

• MULTI-DATA GRAPHIC LCD monitor with blue

backlighting for greatly improved legibility in difﬁcult

lighting conditions.

• Function encoder with two four-way push-buttons

for simpliﬁed programming and accurate settings

• Key-Lock function guards against accidental opera-

tion

• Transmitter features two 3-position switches (SW

5/6 + SW 11/12), two side-mounted proportional

controls (Lv1 + 2) and two proportional sliders

(Sl1+ 2) as standard; controls can be assigned to

any function

mc-20 HoTT

• 24 model memories with storage of all model-spe-

ciﬁc programming and set-up parameters

• Maximum twelve control functions

• Two MULTI-DATA GRAPHIC LCD monitors with

blue backlighting for improved legibility in difﬁcult

lighting conditions

• A function encoder with two touch-sensitive, four-

way keys („CAP Touch“) permit simpliﬁed program-

ming and precise settings

• Twelve toggle switches (three 3-position switches

(SW 2/3, 5/6 + 11/12), ﬁve 2-position switches

(SW 4, 7, 9, 13 + 15), two centre-biased 2-posi-

tion switches (SW 8 + 14), two 2-position locking

switches (SW 1 + 10), two momentary switches on

the rear of the transmitter (SW 16 + 17 / 18 + 19),

two INC/DEC buttons (CTL 5 + 6), two side-mount-

ed proportional controls (Lv1 + 2) and two propor-

tional sliders (Sl1 + 2) installed as standard; controls

can be assigned to any function

Remote control set description

• Key-Lock function guards against accidental ope-

ration

• Voice and, as applicable also MP3 ﬁle, output over

headset output or loudspeaker

• Ring-limiter: functions similar to swashplate limita-

tion but is used for control of up to three Voith-Sch-

neider drives in ship models.

• Channel sequencer for automating servo motion se-

quences of up to three servos, e.g. to automate the

lowering of landing gear or to extend/retract drives

in self-launching gliders.

Model programs

• Model type icon: graphic model type indicator

(ﬁxed-wing / helicopter)

• Transmitter operating hours timer

• Flight phase switch assignments: six switches, two

with a priority function. Every switch combination

can be named freely. This makes the number of

ﬂight phases independent of the number of ﬂight

phase switches.

• Tail type normal, V-tail, Delta/ﬂying-wing and 2 HR

Sv 3+8 (which immediately makes two coupled

elevator servos available without using free mixers

or dual mixers)

• Expanded transmitter control menu: single-sided

centre offset facility. With the exception of the trims,

all transmitter control elements can be assigned

as transmitter controls. Option of assigning two

switches to each input to act as a genuine three-

stage function.

• Wing mixers: New concept for the multi-ﬂap menu

to simplify settings of one to eight wing servos on

a ﬂight-phase speciﬁc basis in a comprehensible

manner without requiring the use of free mixers

• Expanded servo centre adjustment range: now +/-

125%

• Number of ﬂight phases: ﬁxed-wing: 7, helicopter:

6 + AR

• Phase trim available on all axes of ﬁxed-wing mo-

dels

• Servo assignments can be swapped at the receiver

output

Only on the mc-20

• Flap count 4 AIL/4 FL: Full support of eight wing

servos, even without use of free mixers

• »Logical switches«: this function permits two

switches to be coupled as »and« or »or« logic

functions. The result can be employed as a virtual

switch. Typical application: The activation of certain

functions should only be possible in conjunction

with other functions, e.g. wheel brake can only be

activated when the landing gear is down. A number

of functions which are normally independent of one

another, are to be put in their base settings by way

of an »Emergency switch«. This program automa-

tion can be activated by multiple switches that also

select the appropriate program. (Standard only on

the mc-20 HoTT, optional on the mc-16 HoTT.)

• Flight phase switching cutoff delay: the delay time

can be switched off for individual channels on a

ﬂight-phase basis (e.g. for motor off in electric mod-

els or to activate/deactivate helicopter head lock).

(Standard only on the mc-20 HoTT, optional on

the mc-16 HoTT.)

General HoTT features

• Simple, extremely fast binding for each model

• Ultra-fast re-binding even at maximum range

• Any number of receivers can be bound to provide

additional channels (max. 32 channels)

• Range: test and warning function

• Low-voltage warning

• GR-16 and GR-24 receivers used in SAME mode

can simultaneously address a maximum of four

servos as a block, with a frame rate of 10ms (digital

servos only!)

• Thanks to cycle time reduced down to as lit-

tle as 10ms, extremely short response times are

achieved.

• Real-time telemetry analysis on the transmitter

screen. As an option, telemetry data can also be

displayed on the SMART-BOX.

• Selectable cycle time: 10ms or 20ms/30 ms, de-

pending on receiver and operating mode

• Channel mapping in the receiver allows free distri-

bution of control functions.

The travel distance and rotation direction settings

integrated into the receiver make it possible, for ex-

ample, to match up mapped servos with one an-

other.

• The programmable fail-safe functions »Hold«, »Off«

and »Move to preset positions« that are built into

the receiver for every individual servo channel can

be set separately.

16 Remote control set description

Other accessories in Internet at www.graupner.de.

Contact or visit your local dealer. He will be glad to

provide advice.

mc-16 and mc-20 series computer systems

two remote control sets with 2,4-GHz-Graupner-HoTT technology

(Hopping Telemetry Transmission)

The No. 33016 set includes

• Microcomputer transmitter mc-16HoTT with

built-in LiIo transmitter battery 1s4p/4000mAh/3.7V

and two 3-position switches, two proportional slid-

ers on the centre console and two side-mounted

proportional rotary controls (change reserved)

• plug-in charger (4.2V, 500mA)

• Short and long stick-tops

(No. 33000.2 and 33000.3)

• bidirectional receiver Graupner GR-12L HoTT (No.

S1012) for connection of up to 6 servos GR-16

HoTT (No. 33508) for connection of up to 8 servos

• USB adapter/interface (No. 7186.6) including suit-

able USB cable for connection to a PC and an

adapter cable (No. 7186.6S) for receiver updates

• Micro-SD card (4 GB) with an adapter for a card

reader

• Hand rests

• Transmitter strap

The No. 33020 set includes

• Microcomputer transmitter mc-20 HoTT with

built-in LiIo transmitter battery 1s6p/6000mAh/3.7V

and twelve toggle switches (three 3-position switch-

es, ﬁve 2-position switches, two centre-biased

2-position switches and two 2-position locking

switches), two momentary switches on the back of

the transmitter, two INC/DEC buttons (CTL 5 + 6)

plus two side-mounted proportional rotary controls

and two proportional sliders (speciﬁcation reserved)

• plug-in charger (4.2 V, 500 mA)

• Short and long stick-tops

(No. 33000.2 and 33000.3)

• bidirectional receiver Graupner GR-12L HoTT (No.

S1012) for connection of up to 6 servos and GR-24

HoTT (No. 33512) for connection of up to 12 servos

• USB adapter/interface (No. 7186.6) including suit-

able USB cable for connection to a PC and an

adapter cable (No. 7186.6S) for receiver updates

• Micro-SD card (4 GB) with an adapter for a card

reader

• Metal hanger for transmitter straps

• Transmitter strap

• Hand rests

• Aluminum transmitter case

Accessories

No. Description

71.26 Transmitter straps, Graupner HoTT

72.40 Transmitter straps, deluxe

Teacher/pupil cable for the transmitters

mc-16 HoTT and mc-2 0 HoTT, see

page 221

Replacement parts

No. Description

3080 Aluminum transmitter case, HoTT,

400x300x150mm

33000.1 Transmitter battery, ﬂat LiIo, single cell six-

pack/6000mAh 3.7V TX

33002.1 Micro-SD card, 4GB for HoTT transmitter

33012.2 Transmitter metal hanger for mc-16 and

mc-20 HoTT

33012.3 Hand rests for the transmitters mc-16

and mc-20 HoTT (2 piece)

Remote control set description

mc-16 HoTT and mc-2 0 HoTT transmitter

Frequency band 2.4 … 2.4835GHz

Modulation FHSS

Transmission power 100mW EIRP

Control functions mc-16 HoTT:

8 functions, 4 of these can be

trimmed, can be expanded to

12 functions at extra cost

mc-20 HoTT:

12 functions, 4 of these can be

trimmed

Temperature range -10 … +55°C

Antenna Integral patch aerial inside

case

Operating voltage 3.2 … 4.8V

Current draw about 400mA

Range up to about 4 000m

Dimensions about 235 x 228 x 66mm

(without hand rests)

Weight about 1200g with transmitter

battery, without accessorys

GR-12L HoTT receiver (No. S1012)

Operating voltage 3.6 … 8.4V*

Current draw about 70mA

Frequency band 2.4 … 2.4835GHz

Modulation FHSS

Antenna 1 diversity antenna, about

145mm long, about 115mm

of this length encapsulated

and about 30mm active

Plug-in servos 6

Sensor sockets 1 (in place of servo 5)

Temperature range -10 … +55°C

Dimensions about 36 x 21 x 10mm

Weight about 7g

GR-16 HoTT receiver (No. 33508)

Operating voltage 3.6 … 8.4V*

Current draw about 70mA

Frequency band 2.4 … 2.4835GHz

Modulation FHSS

Antenna 2 diversity antennas, about

145mm long, about 115mm

of this length encapsulated

and about 30mm active

Plug-in servos 8

Sensor sockets 1

Temperature range -10 … +55°C

Dimensions about 46 x 21 x 14mm

Weight about 12g

GR-24 HoTT receiver (No. 33512)

Operating voltage 3.6 … 8.4V*

Current draw about 70mA

Frequency band 2.4 … 2.4835GHz

Modulation FHSS

Antenna 2 diversity antennas, about

145mm long, about 115mm

of this length encapsulated

and about 30mm active

Plug-in servos 12

Sensor sockets 1

Temperature range -10 … +55°C

Dimensions about 46 x 31 x 14mm

Weight about 16g

Technical data

* The specication for permissible operating voltage

range applies only to the receiver. Please note in this

context that receiver input voltage is applied without

regulation to connected servos but the voltage range for most

connectable servos (speed controls, gyros, etc.) is only 4.8 to

6 V

18 General operating notices

General operating notices

mc-16 HoTT and mc-20 HoTT transmitters

Transmitter power supply

The mc-16 HoTT is ﬁtted as standard with a re-

chargeable Lithium-lon 1s4p battery with 4000mAh

and the mc-20 HoTT with a 1s6p Li-Ion battery with

6000mAh capacity. (Subject to change.)

However, the standard built-in battery is

not charged upon delivery of the transmit-

ter.

When the transmitter is used, its battery voltage should

be monitored by way of the indicators provided in the

LCD display. If battery voltage drops below the adjust-

able voltage setting (set via item “Batterie warning”

in the “Basic Settings” menu, page 270,), default

value 3,60V, an audible warning signal will sound and

the message window shown below will appear in the

screen

GRAUBELE

#01

0:22h

Stp

Flug

«normal »

K78

0:00

0.0V

3.5V

HoTT

Batt. must

be re-

charged!!

No later than now, operation must be terminated so the

battery can be charged again.

Notice:

Be sure that the correct battery type is set in

the “Basic Settings” menu, page 270!

“Lith” must be set as standard.

The transmitter’s rechargeable LiIo battery can be

charged by way of the charger socket located behind

a cover on the left, front side of the transmitter– as

viewed from the front–with the included plug-in charg-

er (No. 32032.4).

The charging socket is protected as standard with

a protective diode against reverse polarity. Original

Graupner automatic chargers nevertheless recognize

the voltage level of the battery. Note Setting the charg-

er used.

mc-charging jack polarity

The charger cables on the market from other manufac-

turers often have different polarities. Therefore use only

an original Graupner charger cable, No. 3022.

Charging the transmitter battery using the plug-

type charger

With the plug-type charger

(4.2V / 500mA) included in

the set the charge time for

the transmitter battery is

up to about ﬁfteen hours,

depending on the pack’s

initial state of charge.

Never use any

other type or make of plug-type charger, nor a

charger designed for other types of battery.

There is a risk of excessive output voltage and incor-

rect connector polarity (see below), either of which can

result in very serious damage. We recommend that you

label the standard charger to avoid confusion. Please

read the Safety Notes on pages 8 … <?>.

The transmitter must be switched “OFF” during

the entire charging procedure. Never switch on

the transmitter when it is connected to the

charger. Even a brief interruption to charging can cause

charging voltage to rise to a level that will immediately

damage the transmitter with over-voltage. Also for this

reason, be sure all connectors are always plugged in

securely and have good contact.

Charging the transmitter battery via the USB

socket

The transmitter is supplied ﬁtted with a genuine Graup-

ner transmitter battery with integral protective circuit

which can also be charged via the USB port of the

mc-16 HoTT and mc-2 0 HoTT transmitter at the

usual current available at USB ports; see “mini-USB

socket” on page28.

With the transmitter powered on, the charge status is

symbolized by slow rhythm on and off lines in the volt-

age display on the left side of the display.

WARNING:

Charging a battery without integral protective

circuit via the USB socket incurs a serious risk

of ﬁre!

Charging with automatic chargers

To achieve quicker recharging of the single cell LiIo bat-

tery, Graupner automatic chargers can also be used.

The table below shows a selection of these chargers.

Recommended chargers (accessory)

Order

No. Designation

Input voltage 220V

Input voltage 12 V

suitable for

battery types

integr. balancer

NiCd

NiMH

LiPo/LiIo

lead battery

6411 Ultramat 8 x x x x x

6463 Ultramat 12 plus x x x x x x

6464 Ultramat 14 plus x x x x x x x

6466 Ultra Trio plus 14 x x x x x x x

6468 Ultramat 16S x x x x x x x

6469 Ultra Trio Plus 16 x x x x x x

6470 Ultramat 18 x x x x x x x

General operating notices

6475 Ultra Duo Plus 45 x x x x x x x

6478 Ultra Duo Plus 60 x x x x x x x

6480 Ultra Duo Plus 80 x x x x x x x

Charger cable, No. 3022 is additionally needed for the transmitter

and charger cable, No. 3021 is additionally needed for the receiver.

Other charger units and details about the listed chargers can be

found in the Graupner RC main catalog or in Internet at

www.graupner.de.

First connect the charger cable’s banana

plugs to the charger and only then con-

nect the cable’s other end into the charg-

ing jack on the transmitter. Never allow the bare

ends of the banana plugs to come into contact

with one another when the other end of the cable

is plugged into the transmitter.

Charging current may not exceed 1.5 A as other-

wise the diode, and perhaps other components,

could be damaged. If necessary, limit the current

at the charger.

Removing the transmitter’s battery

To remove the transmitter battery locate the cover

of the battery compartment in the back of the trans-

mitter and slide it off in the direction of the arrow:

Battery connector

Lift one side of the battery and withdraw it from the

hook-and-loop tape without using force. Then discon-

nect the transmitter battery’s connector by carefully

pulling on the supply line cable.

(The photo shows the battery of the mc-20 HoTT

transmitter.)

Inserting the transmitter’s battery

The battery connector is protected against a reverse

polarity connection by two slanted edges, see illustra-

tion. When correctly plugged in, the unconnected pin

of the connector is at the bottom, as shown in the

illustration. The plus pole (red lead)

is in the middle and the minus pole

(brown or black lead) is toward the

antenna side.

Never try to force the connector onto

its circuit-board socket.

Place the battery into its compartment and close the

transmitter’s cover.

Battery operation timer at the bottom left of the

screen

This timer shows the transmitter’s cumulative operating

time since the transmitter’s battery was last charged.

This timer is automatically reset to “0:00” when the

transmitter is switched on and its battery voltage is

signiﬁcantly higher than when the transmitter was last

used, e.g. because the battery was charged.

GRAUBELE

#01

0:00h

Stp

Flt

«normal »

K78

0:00

0.0V

4.1V

HoTT

General charging notices

• The charging instructions for the charger as

well as for the battery from its manufacturer

to be observed.

Transmitter

connector polarity

• Pay attention to the maximum permissible

charging current speciﬁed by the battery’s

manufacturer. In order to prevent damage

to the transmitter, charging current should never

exceed 1A. If necessary, limit the current at the

charger.

• If the transmitter battery is nevertheless to be

charged at a current rate in excess of 1A, then it is

imperative that this is done outside the transmitter.

Otherwise there is a risk of damage to the trans-

mitter’s board due to overloading its printed circuit

paths and/or overheating of the battery.

• If an automatic charger is to be used for charging,

perform several test charging procedures to ensure

the ﬂawless functionality of its automatic shut-off.

This applies particularly if you want to charge the

standard installed Lithium battery with an automatic

charger unit. You may need to alter the charger’s

cut-off behaviour if the charger you are using offers

this option.

• Do not execute a battery discharge or battery main-

tenance program through the charger jack. The

charger jack is not suitable for this purpose.

• Always connect the charger cable to the charger

ﬁrst and then to the receiver or transmitter battery.

This avoids the possibility of shorting the bare ba-

nana plug ends together.

• If the battery heats up signiﬁcantly, check the bat-

tery’s condition, replace the battery or reduce the

charging current.

• Never leave a charging battery unattended.

• Follow the safety notices and handling instruc-

tions provided on page 8.

20 General operating notices

Opening the transmitter housing

Carefully read the notices below before open-

ing the transmitter housing. It may be better if

unexperienced users ask a Graupner Service

location to take care of the procedures described

below.

The transmitter should only be opened in the following

situations:

• to convert a neutralized joystick to a non-neutralized

joystick or a non-neutralized joystick to a neutralized

joystick.

• to adjust joystick return tension.

Switch off the transmitter before opening

its cover.

Open the battery compartment as described on the

previous double-page. If the handrests are ﬁtted, undo

the three lower retaining screws of the six screws in

each handrest.

Now undo the ﬁve recessed screws in the back of

the transmitter and the battery well using a PH1-size

cross-point screwdriver; see illustration:

Note that the screw-holes are inclined slightly to the

rear, so the cross-point screwdriver should be applied

at the corresponding angle.

Hold the two housing sections together by hand then

turn the transmitter upright over a suitable surface so

these 5 screws can fall out without getting lost. Now lift

up on the backplate carefully and place it to one side.

Important notices:

• Ensure that the shorter screw –in the

battery well –does not fall inside the

transmitter.

• Make no modi cations of any kind to the cir-

cuitry as this will void the guarantee as well as

the unit‘s of cial permit.

This applies in particular to the switches in-

stalled on both sides of the front screen. If you

wish to change the arrangement, contact your

nearest Graupner Service Centre.

• Be sure not to touch the circuit boards

with any metallic objects. Do not touch

contacts with your  ngers.

• Never switch the transmitter on when its hou-

sing is open.

When you close the transmitter again, be sure

that …

• … no cables are caught between housing edges

when the backplate is put into position.

• … both housing parts are properly seated with one

another before screwing them together. Never force

the housing sections together.

• Turn the screws down into the existing housing

threads without stripping them out.

• … ﬁt the shorter of the ﬁve screws in the battery

compartment again.

• … reconnect the battery.

• … re-install the handrests if you wish.

Lithium battery CR 2032

When you remove the transmitter back panel, you will

see the holder for a CR 2032 battery on the circuit

board below the aerial base, slightly left of centre:

Lithium battery

This battery maintains the date and time settings during

a transmitter power supply outage, for example when

the transmitter’s main battery is being replaced.

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